I was looking for this little scenario for a long time and finally found it when cleaning out my work sent items. I found it on a forum (glocktalk or sigforum maybe even here) and thought it was a good scenario that will maybe help some sheeple to see a little bit of the light.
Here it is:
I offer you a scenario.
You are in a hotel. I am across the hall.
I am armed. You are not. A rampaging fool chasing his personal demons kicks in one of two doors. yours or mine.
He then attempts to hack the occupant to bits, and go next door.
If he gets to me first, he's shot.
If he gets to you first, he hacks you to bits and then kicks in MY door, and gets shot.
You want him to get to MY door or YOUR door first?
No dodging. It's your life. What result do you like best?
I rest my case.